XML 52 R40.htm IDEA: XBRL DOCUMENT
v3.21.2

Warrants to Acquire Shares of Common Stock - Warrants Outstanding (Details) shares in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2021 shares
Class of Warrant or Right, Outstanding [Roll Forward] |
Outstanding, beginning of period (in shares) | 1,392
Granted (in shares) | 0
Exercised (in shares) | (832)
Canceled/Expired (in shares) | (1)
Outstanding, end of period (in shares) | 559
July 2020 PIPE Offering |
Class of Warrant or Right, Outstanding [Roll Forward] |
Outstanding, beginning of period (in shares) | 445
Granted (in shares) | 0
Exercised (in shares) | (420)
Canceled/Expired (in shares) | 0
Outstanding, end of period (in shares) | 25
January 2020 Offering |
Class of Warrant or Right, Outstanding [Roll Forward] |
Outstanding, beginning of period (in shares) | 719
Granted (in shares) | 0
Exercised (in shares) | (410)
Canceled/Expired (in shares) | 0
Outstanding, end of period (in shares) | 309
June 2019 Offering |
Class of Warrant or Right, Outstanding [Roll Forward] |
Outstanding, beginning of period (in shares) | 2
Granted (in shares) | 0
Exercised (in shares) | (1)
Canceled/Expired (in shares) | 0
Outstanding, end of period (in shares) | 1
March 2019 Exercise Agreement |
Class of Warrant or Right, Outstanding [Roll Forward] |
Outstanding, beginning of period (in shares) | 63
Granted (in shares) | 0
Exercised (in shares) | 0
Canceled/Expired (in shares) | 0
Outstanding, end of period (in shares) | 63
July 2018 Offering |
Class of Warrant or Right, Outstanding [Roll Forward] |
Outstanding, beginning of period (in shares) | 141
Granted (in shares) | 0
Exercised (in shares) | (1)
Canceled/Expired (in shares) | 0
Outstanding, end of period (in shares) | 140
Other |
Class of Warrant or Right, Outstanding [Roll Forward] |
Outstanding, beginning of period (in shares) | 22
Granted (in shares) | 0
Exercised (in shares) | 0
Canceled/Expired (in shares) | (1)
Outstanding, end of period (in shares) | 21

X
- Definition Class Of Warrant Or Right, Number Of Warrants Exercised + References No definition available. + Details
Name: | sls_ClassOfWarrantOrRightNumberOfWarrantsExercised
Namespace Prefix: | sls_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Class Of Warrant Or Right, Number Of Warrants Issued + References No definition available. + Details
Name: | sls_ClassOfWarrantOrRightNumberOfWarrantsIssued
Namespace Prefix: | sls_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Class of Warrant or Right, Canceled Or Expired + References No definition available. + Details
Name: | sls_ClassofWarrantorRightCanceledOrExpired
Namespace Prefix: | sls_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Class of Warrant or Right, Outstanding [Roll Forward] + References No definition available. + Details
Name: | sls_ClassofWarrantorRightOutstandingRollForward
Namespace Prefix: | sls_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of warrants or rights outstanding. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=sls_July2020PIPEOfferingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=sls_January2020OfferingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=sls_July2019OfferingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=sls_WarrantExerciseAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=sls_July2018OfferingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=sls_OtherWarrantIssuesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |